If you’re going to use --formats=html, it’s probably best not using the same input and output directories.

Moreover, you may notice in the above output that the second template wrote to index-o.html. When the input and output directories are the same and the source template is named index.html, we add an -o suffix to avoid overwriting itself. This is a special case that only applies to index.html filenames. You can customize the -o suffix with the htmlOutputSuffix configuration option.